U.S. Department of Transportation
Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
| REPORT |
| This report is an archived publication and may contain dated technical, contact, and link information |
|
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| Publication Number: FHWA-HRT-14-057 Date: February 2018 |
Publication Number: FHWA-HRT-14-057 Date: February 2018 |
Appendix D provides a summary of each variable by land use and region in table 75 through table 86. The following summary statistics are used in aspects of the model application, such as default values for the models:
Table 75. Summary statistics for North Carolina mixed-use land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 26 | 5.85 | 65.15 | 28.55 | 17.01 |
| Injury | Injury crashes/mile-year | 26 | 0.69 | 19.35 | 7.81 | 4.57 |
| Turning | Turning crashes/mile-year | 26 | 1.26 | 14.44 | 5.24 | 4.17 |
| Rear-end | Rear-end crashes/mile-year | 26 | 1.38 | 33.84 | 13.29 | 9.34 |
| Right-angle | Right-angle crashes/mile-year | 26 | 0.34 | 11.11 | 3.61 | 2.97 |
| PROPLANE1 | Proportion of total length with two lanes | 26 | 0.00 | 0.76 | 0.07 | 0.20 |
| PROPLANE2 | Proportion of total length with three or four lanes | 26 | 0.00 | 1.00 | 0.82 | 0.29 |
| PROPLANE3 | Proportion of total length with five or more lanes | 26 | 0.00 | 1.00 | 0.11 | 0.24 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 26 | 0.00 | 1.00 | 0.63 | 0.42 |
| PROPTWLTL | Proportion of total length with a TWLTL | 26 | 0.00 | 1.00 | 0.30 | 0.42 |
| PROPUNDIV | Proportion of total length with an undivided median | 26 | 0.00 | 0.76 | 0.07 | 0.20 |
| PROPNODEV | Proportion of total length with no adjacent development | 26 | 0.00 | 1.00 | 0.10 | 0.28 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 26 | 0.00 | 1.00 | 0.90 | 0.28 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 26 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPLIGHT | Proportion of total length with illumination present | 26 | 0.00 | 1.00 | 0.85 | 0.35 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 26 | 0.00 | 1.00 | 0.05 | 0.20 |
| PROPVC | Proportion of total length with visual clutter | 26 | 0.00 | 1.00 | 0.06 | 0.20 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 26 | 0.00 | 1.00 | 0.23 | 0.35 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 26 | 0.00 | 1.00 | 0.21 | 0.34 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 26 | 0.00 | 1.00 | 0.56 | 0.44 |
| PROPFRONTRD | Proportion of total length with a frontage road | 26 | 0.00 | 0.11 | 0.01 | 0.02 |
| DRWYDENS | Number of driveways per mile | 26 | 1.47 | 38.93 | 12.85 | 10.23 |
| UNSIGDENS | Number of unsignalized intersections per mile | 26 | 0.75 | 10.48 | 5.35 | 2.62 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 26 | 2.26 | 46.92 | 18.20 | 11.96 |
| SIGDENS | Number of signalized intersections per mile | 26 | 0.73 | 4.74 | 2.45 | 1.10 |
| MEDOPDENS | Number of median openings per mile | 24 | 0.00 | 4.72 | 1.61 | 1.43 |
| NODRWYS | Number of driveways | 26 | 3.00 | 112.00 | 28.31 | 29.16 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 26 | 0.00 | 69.00 | 6.19 | 14.13 |
| NORESFULLDRWY | Number of residential full-movement driveways | 26 | 0.00 | 88.00 | 9.04 | 17.54 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 26 | 0.00 | 20.00 | 6.54 | 6.24 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 26 | 0.00 | 40.00 | 6.54 | 12.01 |
| NOUNSIG | Number of unsignalized intersections | 26 | 2.00 | 31.00 | 10.69 | 6.39 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 26 | 1.00 | 27.00 | 7.77 | 5.46 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 26 | 0.00 | 14.00 | 2.92 | 3.14 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 26 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 26 | 0.00 | 25.00 | 5.31 | 5.42 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 26 | 0.00 | 9.00 | 2.88 | 2.30 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 26 | 0.00 | 8.00 | 2.81 | 2.19 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 26 | 0.00 | 1.00 | 0.08 | 0.27 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 26 | 0.00 | 7.00 | 2.12 | 1.99 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 26 | 0.00 | 2.00 | 0.27 | 0.67 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 26 | 0.00 | 1.00 | 0.08 | 0.27 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 26 | 0.00 | 2.00 | 0.19 | 0.49 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 26 | 0.00 | 9.00 | 1.77 | 2.18 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 26 | 0.00 | 29.00 | 7.08 | 6.90 |
| NOSIG | Number of signalized intersections | 26 | 1.00 | 14.00 | 5.04 | 2.86 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 25 | 442.00 | 4,846.00 | 1,532.00 | 1,107.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 25 | 1,142.00 | 14,810.00 | 4,456.00 | 2,642.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 26 | 0.00 | 3.00 | 0.85 | 0.88 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 26 | 1.00 | 12.00 | 4.12 | 2.58 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 26 | 0.00 | 1.00 | 0.08 | 0.27 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 26 | 0.00 | 9.00 | 2.85 | 2.05 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 26 | 1.00 | 14.00 | 4.77 | 2.80 |
| NOMEDOP | Number of median openings | 24 | 0.00 | 15.00 | 3.54 | 3.88 |
| MEDOPLT | Number of median openings with a left-turn lane | 24 | 0.00 | 12.00 | 3.25 | 3.26 |
| MEDOPNOLT | Number of median openings without a left-turn lane | 24 | 0.00 | 5.00 | 0.29 | 1.08 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 26 | 35.00 | 55.00 | 46.00 | 4.08 |
| AVGAADT | Average AADT | 26 | 3,100.00 | 40,428 | 19,806.00 | 8,679.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 10 | 379.00 | 1,265.00 | 676.00 | 287.27 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 10 | 281.00 | 1,265.00 | 647.00 | 312.34 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 11 | 0.00 | 1,939.00 | 646.00 | 625.47 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 76. Summary statistics for Minnesota mixed-use land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 18 | 7.22 | 105.94 | 38.81 | 28.87 |
| Injury | Injury crashes/mile-year | 18 | 1.90 | 40.05 | 12.66 | 10.43 |
| Turning | Turning crashes/mile-year | 18 | 0.09 | 10.16 | 2.92 | 2.73 |
| Rear-end | Rear-end crashes/mile-year | 18 | 1.67 | 67.83 | 17.87 | 19.15 |
| Right-angle | Right-angle crashes/mile-year | 18 | 1.30 | 22.95 | 7.05 | 5.47 |
| PROPLANE1 | Proportion of total length with two lanes | 18 | 0.00 | 1.00 | 0.21 | 0.33 |
| PROPLANE2 | Proportion of total length with three or four lanes | 18 | 0.00 | 1.00 | 0.79 | 0.33 |
| PROPLANE3 | Proportion of total length with five or more lanes | 18 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 18 | 0.00 | 1.00 | 0.61 | 0.43 |
| PROPTWLTL | Proportion of total length with a TWLTL | 18 | 0.00 | 0.73 | 0.10 | 0.23 |
| PROPUNDIV | Proportion of total length with an undivided median | 18 | 0.00 | 1.00 | 0.29 | 0.40 |
| PROPNODEV | Proportion of total length with no adjacent development | 18 | 0.00 | 0.14 | 0.01 | 0.03 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 18 | 0.00 | 1.00 | 0.85 | 0.28 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 18 | 0.00 | 1.00 | 0.14 | 0.29 |
| PROPLIGHT | Proportion of total length with illumination present | 18 | 0.00 | 1.00 | 0.57 | 0.48 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 18 | 0.00 | 1.00 | 0.10 | 0.26 |
| PROPVC | Proportion of total length with visual clutter | 18 | 0.00 | 1.00 | 0.28 | 0.35 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 18 | 0.37 | 1.00 | 0.77 | 0.21 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 18 | 0.00 | 0.63 | 0.23 | 0.21 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 18 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPFRONTRD | Proportion of total length with a frontage road | 18 | 0.12 | 1.00 | 0.70 | 0.31 |
| DRWYDENS | Number of driveways per mile | 18 | 0.00 | 43.56 | 16.03 | 14.65 |
| UNSIGDENS | Number of unsignalized intersections per mile | 18 | 0.80 | 14.93 | 6.75 | 4.81 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 18 | 1.07 | 58.49 | 22.79 | 19.03 |
| SIGDENS | Number of signalized intersections per mile | 18 | 0.76 | 6.78 | 2.93 | 1.46 |
| MEDOPDENS | Number of median openings per mile | 14 | 0.00 | 4.46 | 1.47 | 1.45 |
| NODRWYS | Number of driveways | 18 | 0.00 | 127.00 | 37.11 | 39.23 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 18 | 0.00 | 0.71 | 22.00 | 26.89 |
| NORESFULLDRWY | Number of residential full-movement driveways | 18 | 0.00 | 38.00 | 7.89 | 12.16 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 18 | 0.00 | 31.00 | 6.11 | 10.37 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 18 | 0.00 | 6.00 | 1.11 | 1.91 |
| NOUNSIG | Number of unsignalized intersections | 18 | 2.00 | 45.00 | 15.44 | 11.83 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 18 | 1.00 | 23.00 | 10.28 | 6.47 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 18 | 0.00 | 22.00 | 5.00 | 6.48 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 18 | 0.00 | 1.00 | 0.11 | 0.32 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 18 | 0.00 | 18.00 | 6.28 | 6.29 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 18 | 0.00 | 12.00 | 4.00 | 4.00 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 18 | 0.00 | 11.00 | 3.44 | 3.58 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 18 | 0.00 | 2.00 | 0.56 | 0.70 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 18 | 0.00 | 22.00 | 5.00 | 6.48 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 18 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 18 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 18 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 18 | 0.00 | 11.00 | 3.39 | 3.29 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 18 | 0.00 | 29.00 | 7.44 | 8.49 |
| NOSIG | Number of signalized intersections | 18 | 2.00 | 17.00 | 7.39 | 4.20 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 18 | 250.00 | 5,285.00 | 1,160.00 | 1,303.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 18 | 299.00 | 9,744.00 | 3,635.00 | 2,057.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 18 | 0.00 | 4.00 | 1.00 | 1.41 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 18 | 2.00 | 17.00 | 6.28 | 3.85 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 18 | 0.00 | 2.00 | 0.11 | 0.47 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 18 | 1.00 | 10.00 | 4.39 | 3.07 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 18 | 0.00 | 14.00 | 6.11 | 3.72 |
| NOMEDOP | Number of median openings | 14 | 0.00 | 16.00 | 4.07 | 4.21 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 14 | 0.00 | 16.00 | 3.71 | 4.03 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 14 | 0.00 | 3.00 | 0.36 | 0.93 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 18 | 30.00 | 60.00 | 42.00 | 10.18 |
| AVGAADT | Average AADT | 18 | 7,561.00 | 42,903.00 | 23,787.00 | 9,806.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 9 | 142.00 | 2,640.00 | 1,121.00 | 784.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 9 | 142.00 | 2,640.00 | 1,121.00 | 784.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 9 | 70.00 | 1,671.00 | 710.00 | 587.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 77. Summary statistics for Northern California mixed-use land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 20 | 0.18 | 41.16 | 18.49 | 14.12 |
| Injury | Injury crashes/mile-year | 20 | 0.09 | 19.56 | 8.66 | 6.30 |
| Turning | Turning crashes/mile-year | 20 | 0.09 | 13.81 | 4.70 | 4.46 |
| Rear-end | Rear-end crashes/mile-year | 20 | 0.09 | 21.12 | 8.44 | 7.05 |
| Right-angle | Right-angle crashes/mile-year | 20 | 0.00 | 5.05 | 1.70 | 1.49 |
| PROPLANE1 | Proportion of total length with two lanes | 20 | 0.00 | 1.00 | 0.15 | 0.32 |
| PROPLANE2 | Proportion of total length with three or four lanes | 20 | 0.00 | 1.00 | 0.44 | 0.44 |
| PROPLANE3 | Proportion of total length with five or more lanes | 20 | 0.00 | 1.00 | 0.41 | 0.46 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 20 | 0.00 | 1.00 | 0.61 | 0.42 |
| PROPTWLTL | Proportion of total length with a TWLTL | 20 | 0.00 | 0.68 | 0.10 | 0.20 |
| PROPUNDIV | Proportion of total length with an undivided median | 20 | 0.00 | 1.00 | 0.29 | 0.37 |
| PROPNODEV | Proportion of total length with no adjacent development | 20 | 0.00 | 0.54 | 0.03 | 0.12 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 20 | 0.00 | 1.00 | 0.61 | 0.45 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 20 | 0.00 | 1.00 | 0.36 | 0.45 |
| PROPLIGHT | Proportion of total length with illumination present | 20 | 0.00 | 1.00 | 0.76 | 0.37 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 20 | 0.00 | 1.00 | 0.07 | 0.23 |
| PROPVC | Proportion of total length with visual clutter | 20 | 0.00 | 1.00 | 0.20 | 0.38 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.30 | 0.39 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.42 | 0.39 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.28 | 0.37 |
| PROPFRONTRD | Proportion of total length with a frontage road | 20 | 0.00 | 1.00 | 0.32 | 0.33 |
| DRWYDENS | Number of driveways per mile | 20 | 0.00 | 108.53 | 42.70 | 26.19 |
| UNSIGDENS | Number of unsignalized intersections per mile | 20 | 1.03 | 13.31 | 7.06 | 4.24 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 20 | 1.98 | 109.56 | 49.76 | 27.96 |
| SIGDENS | Number of signalized intersections per mile | 20 | 0.22 | 6.74 | 4.02 | 1.73 |
| MEDOPDENS | Number of median openings per mile | 20 | 0.00 | 4.67 | 1.47 | 1.58 |
| NODRWYS | Number of driveways | 20 | 0.00 | 420.00 | 100.00 | 90.08 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 20 | 0.00 | 81.00 | 20.15 | 27.38 |
| NORESFULLDRWY | Number of residential full-movement driveways | 20 | 0.00 | 76.00 | 13.15 | 21.29 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 20 | 0.00 | 186.00 | 44.10 | 47.96 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 20 | 0.00 | 382.00 | 22.60 | 84.74 |
| NOUNSIG | Number of unsignalized intersections | 20 | 2.00 | 36.00 | 14.75 | 10.55 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 20 | 1.00 | 33.00 | 11.76 | 8.78 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 20 | 0.00 | 28.00 | 3.00 | 6.16 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 20 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 20 | 0.00 | 22.00 | 5.35 | 5.48 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 20 | 0.00 | 22.00 | 6.40 | 6.57 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 20 | 0.00 | 22.00 | 6.15 | 6.14 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 20 | 0.00 | 3.00 | 0.25 | 0.72 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 20 | 0.00 | 28.00 | 2.95 | 6.19 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 20 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 20 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 20 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 20 | 0.00 | 4.00 | 0.85 | 1.35 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 20 | 0.00 | 20.00 | 4.85 | 5.19 |
| NOSIG | Number of signalized intersections | 20 | 1.00 | 24.00 | 9.15 | 6.23 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 19 | 231.00 | 1,755.00 | 678.00 | 440.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 19 | 1,181.00 | 6,094.00 | 2,481.00 | 1,232.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 20 | 0.00 | 7.00 | 2.25 | 2.15 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 20 | 1.00 | 20.00 | 6.70 | 5.12 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 20 | 0.00 | 2.00 | 0.15 | 0.49 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 20 | 0.00 | 7.00 | 2.30 | 2.05 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 20 | 1.00 | 16.00 | 6.75 | 4.35 |
| NOMEDOP | Number of median openings | 20 | 0.00 | 12.00 | 2.85 | 3.48 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 20 | 0.00 | 12.00 | 2.75 | 3.39 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 20 | 0.00 | 1.00 | 0.10 | 0.31 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 20 | 30.00 | 55.00 | 40.00 | 7.05 |
| AVGAADT | Average AADT | 20 | 10,018.00 | 86,773.00 | 33,724.00 | 17,160.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 7 | 45.00 | 2,214.00 | 524.00 | 758.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 7 | 46.00 | 726.00 | 181.00 | 244.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 6 | 29.00 | 1,276.00 | 357.00 | 468.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 78. Summary statistics for Southern California mixed-use land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 14 | 1.14 | 61.13 | 23.04 | 20.79 |
| Injury | Injury crashes/mile-year | 14 | 1.14 | 24.87 | 10.51 | 7.34 |
| Turning | Turning crashes/mile-year | 14 | 0.86 | 19.33 | 7.49 | 6.53 |
| Rear-end | Rear-end crashes/mile-year | 14 | 0.00 | 30.07 | 8.37 | 8.89 |
| Right-angle | Right-angle crashes/mile-year | 14 | 0.00 | 12.44 | 2.73 | 3.347 |
| PROPLANE1 | Proportion of total length with two lanes | 14 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPLANE2 | Proportion of total length with three or four lanes | 14 | 0.00 | 1.00 | 0.46 | 0.46 |
| PROPLANE3 | Proportion of total length with five or more lanes | 14 | 0.00 | 1.00 | 0.54 | 0.46 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 14 | 0.00 | 1.00 | 0.48 | 0.43 |
| PROPTWLTL | Proportion of total length with a TWLTL | 14 | 0.00 | 0.86 | 0.16 | 0.26 |
| PROPUNDIV | Proportion of total length with an undivided median | 14 | 0.00 | 1.00 | 0.36 | 0.42 |
| PROPNODEV | Proportion of total length with no adjacent development | 14 | 0.00 | 0.30 | 0.02 | 0.08 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 14 | 0.00 | 1.00 | 0.34 | 0.42 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 14 | 0.00 | 1.00 | 0.64 | 0.41 |
| PROPLIGHT | Proportion of total length with illumination present | 14 | 0.87 | 1.00 | 0.99 | 0.04 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 14 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPVC | Proportion of total length with visual clutter | 14 | 0.00 | 1.00 | 0.81 | 0.29 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 14 | 0.00 | 1.00 | 0.74 | 0.36 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 14 | 0.00 | 1.00 | 0.24 | 0.36 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 14 | 0.00 | 0.28 | 0.03 | 0.08 |
| PROPFRONTRD | Proportion of total length with a frontage road | 14 | 0.00 | 1.00 | 0.27 | 0.33 |
| DRWYDENS | Number of driveways per mile | 14 | 20.10 | 81.55 | 44.75 | 17.37 |
| UNSIGDENS | Number of unsignalized intersections per mile | 14 | 0.57 | 15.36 | 7.06 | 4.04 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 14 | 20.68 | 87.55 | 51.81 | 19.76 |
| SIGDENS | Number of signalized intersections per mile | 14 | 2.58 | 8.84 | 5.11 | 1.87 |
| MEDOPDENS | Number of median openings per mile | 10 | 0.00 | 5.01 | 1.82 | 1.92 |
| NODRWYS | Number of driveways | 14 | 16.00 | 684.00 | 181.57 | 220.54 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 14 | 0.00 | 448.00 | 78.07 | 119.43 |
| NORESFULLDRWY | Number of residential full-movement driveways | 14 | 0.00 | 128.00 | 20.71 | 36.96 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 14 | 0.00 | 614.00 | 76.21 | 161.99 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 14 | 0.00 | 32.00 | 6.57 | 10.50 |
| NOUNSIG | Number of unsignalized intersections | 14 | 1.00 | 141.00 | 33.36 | 43.28 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 14 | 0.00 | 102.00 | 22.50 | 30.35 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 14 | 0.00 | 39.00 | 10.86 | 13.84 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 14 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 14 | 0.00 | 56.00 | 13.86 | 16.59 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 14 | 0.00 | 86.00 | 8.64 | 22.84 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 14 | 0.00 | 82.00 | 8.29 | 21.82 |
| NO3LEGLFMOUNSIG | Number of 3-legged left from major only unsignalized intersections | 14 | 0.00 | 4.00 | 0.36 | 1.08 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 14 | 0.00 | 38.00 | 10.71 | 13.60 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 14 | 0.00 | 1.00 | 0.14 | 0.36 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 14 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 14 | 0.00 | 1.00 | 0.14 | 0.36 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 14 | 0.00 | 0.00 | 0.00 | 0.00 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 14 | 0.00 | 84.00 | 19.21 | 25.32 |
| NOSIG | Number of signalized intersections | 14 | 3.00 | 66.00 | 18.79 | 21.24 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 14 | 139.00 | 1,461.00 | 495.00 | 388.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 14 | 846.00 | 4,130.00 | 1,992.00 | 1,023.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 14 | 0.00 | 11.00 | 2.57 | 2.98 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 14 | 2.00 | 57.00 | 16.07 | 18.52 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 14 | 0.00 | 1.00 | 0.07 | 0.27 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 14 | 0.00 | 25.00 | 4.29 | 6.57 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 14 | 0.00 | 63.00 | 17.79 | 20.48 |
| NOMEDOP | Number of median openings | 10 | 0.00 | 40.00 | 8.70 | 14.45 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 10 | 0.00 | 40.00 | 8.30 | 14.63 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 10 | 0.00 | 2.00 | 0.40 | 0.84 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 14 | 25.00 | 45.00 | 38.00 | 4.70 |
| AVGAADT | Average AADT | 14 | 17,723.00 | 67,080.00 | 45,707.00 | 15,177.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 3 | 275.00 | 360.00 | 325.00 | 44.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 3 | 275.00 | 360.00 | 325.00 | 44.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 2 | 235.00 | 255.00 | 245.00 | 14.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 79. Summary statistics for North Carolina commercial land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 24 | 0.84 | 195.31 | 39.21 | 38.46 |
| Injury | Injury crashes/mile-year | 24 | 0.00 | 40.74 | 8.92 | 8.03 |
| Turning | Turning crashes/mile-year | 24 | 0.00 | 24.44 | 6.27 | 5.86 |
| Rear-end | Rear-end crashes/mile-year | 24 | 0.00 | 69.63 | 17.18 | 16.46 |
| Right-angle | Right-angle crashes/mile-year | 24 | 0.00 | 52.10 | 6.73 | 10.30 |
| PROPLANE1 | Proportion of total length with two lanes | 24 | 0.00 | 1.00 | 0.21 | 0.39 |
| PROPLANE2 | Proportion of total length with three or four lanes | 24 | 0.00 | 1.00 | 0.63 | 0.42 |
| PROPLANE3 | Proportion of total length with five or more lanes | 24 | 0.00 | 1.00 | 0.18 | 0.32 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 24 | 0.00 | 1.00 | 0.51 | 0.46 |
| PROPTWLTL | Proportion of total length with a TWLTL | 24 | 0.00 | 1.00 | 0.29 | 0.37 |
| PROPUNDIV | Proportion of total length with an undivided median | 24 | 0.00 | 1.00 | 0.21 | 0.35 |
| PROPNODEV | Proportion of total length with no adjacent development | 24 | 0.00 | 1.00 | 0.15 | 0.32 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 24 | 0.00 | 1.00 | 0.74 | 0.38 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 24 | 0.00 | 1.00 | 0.11 | 0.28 |
| PROPLIGHT | Proportion of total length with illumination present | 24 | 0.00 | 1.00 | 0.66 | 0.45 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 23 | 0.00 | 0.71 | 0.05 | 0.15 |
| PROPVC | Proportion of total length with visual clutter | 24 | 0.00 | 1.00 | 0.16 | 0.34 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 24 | 0.00 | 1.00 | 0.22 | 0.38 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 24 | 0.00 | 0.74 | 0.12 | 0.21 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 24 | 0.00 | 1.00 | 0.62 | 0.41 |
| PROPFRONTRD | Proportion of total length with a frontage road | 24 | 0.00 | 0.42 | 0.03 | 0.10 |
| DRWYDENS | Number of driveways per mile | 24 | 0.00 | 50.00 | 10.79 | 11.90 |
| UNSIGDENS | Number of unsignalized intersections per mile | 24 | 0.00 | 8.00 | 4.05 | 2.19 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 24 | 0.92 | 57.78 | 14.85 | 12.63 |
| SIGDENS | Number of signalized intersections per mile | 24 | 0.00 | 9.04 | 2.96 | 2.00 |
| MEDOPDENS | Number of median openings per mile | 18 | 0.00 | 5.62 | 0.96 | 1.45 |
| NODRWYS | Number of driveways | 24 | 0.00 | 103.00 | 20.96 | 25.33 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 24 | 0.00 | 78.00 | 9.88 | 17.85 |
| NORESFULLDRWY | Number of residential full-movement driveways | 24 | 0.00 | 22.00 | 2.63 | 6.41 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 24 | 0.00 | 39.00 | 8.00 | 10.17 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 24 | 0.00 | 5.00 | 0.46 | 1.32 |
| NOUNSIG | Number of unsignalized intersections | 24 | 0.00 | 34.00 | 7.54 | 7.40 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 24 | 0.00 | 19.00 | 5.63 | 5.19 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 24 | 0.00 | 15.00 | 1.92 | 3.09 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 24 | 0.00 | 18.00 | 3.21 | 3.92 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 24 | 0.00 | 13.00 | 2.42 | 3.09 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 24 | 0.00 | 10.00 | 2.04 | 2.56 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 24 | 0.00 | 3.00 | 0.38 | 0.77 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 24 | 0.00 | 15.00 | 1.71 | 3.09 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 24 | 0.00 | 2.00 | 0.21 | 0.51 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 24 | 0.00 | 1.00 | 0.08 | 0.28 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 24 | 0.00 | 2.00 | 0.13 | 0.45 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 24 | 0.00 | 14.00 | 2.08 | 3.23 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 24 | 0.00 | 31.00 | 4.79 | 6.59 |
| NOSIG | Number of signalized intersections | 24 | 0.00 | 15.00 | 4.88 | 3.71 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 21 | 201.00 | 12,228.00 | 1,691.00 | 2,551.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 21 | 977.00 | 12,228.00 | 3,934.00 | 2,936.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 24 | 0.00 | 4.00 | 0.96 | 1.16 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 24 | 0.00 | 11.00 | 3.88 | 2.86 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 24 | 0.00 | 9.00 | 3.42 | 2.32 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 24 | 0.00 | 15.00 | 4.75 | 3.65 |
| NOMEDOP | Number of median openings | 18 | 0.00 | 10.00 | 2.22 | 3.34 |
| MEDOPLT | Number of median openings with a left-turn lane | 18 | 0.00 | 10.00 | 1.89 | 3.12 |
| MEDOPNOLT | Number of median openings without a left-turn lane | 18 | 0.00 | 6.00 | 0.33 | 1.41 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 24 | 35.00 | 55.00 | 45.00 | 4.29 |
| AVGAADT | Average AADT | 24 | 50.00 | 46,087.00 | 22,085.00 | 13,311.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 12 | 376.00 | 1,991.00 | 856.00 | 458.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 12 | 331.00 | 1,991.00 | 808.00 | 490.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 12 | 189.00 | 2,446.00 | 1,063.00 | 700.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 80. Summary statistics for Minnesota commercial land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 20 | 12.62 | 140.26 | 38.85 | 30.27 |
| Injury | Injury crashes/mile-year | 20 | 12.62 | 140.26 | 38.85 | 30.27 |
| Turning | Turning crashes/mile-year | 20 | 0.22 | 23.93 | 3.12 | 5.12 |
| Rear-end | Rear-end crashes/mile-year | 20 | 5.56 | 65.28 | 20.01 | 15.85 |
| Right-angle | Right-angle crashes/mile-year | 20 | 1.35 | 27.64 | 6.29 | 7.10 |
| PROPLANE1 | Proportion of total length with two lanes | 20 | 0.00 | 1.00 | 0.12 | 0.32 |
| PROPLANE2 | Proportion of total length with three or four lanes | 20 | 0.00 | 1.00 | 0.83 | 0.32 |
| PROPLANE3 | Proportion of total length with five or more lanes | 20 | 0.00 | 0.37 | 0.04 | 0.11 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 20 | 0.00 | 1.00 | 0.73 | 0.41 |
| PROPTWLTL | Proportion of total length with a TWLTL | 20 | 0.00 | 1.00 | 0.10 | 0.29 |
| PROPUNDIV | Proportion of total length with an undivided median | 20 | 0.00 | 1.00 | 0.17 | 0.33 |
| PROPNODEV | Proportion of total length with no adjacent development | 20 | 0.00 | 0.14 | 0.01 | 0.03 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 20 | 0.50 | 1.00 | 0.92 | 0.16 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 20 | 0.00 | 0.50 | 0.07 | 0.16 |
| PROPLIGHT | Proportion of total length with illumination present | 20 | 0.00 | 1.00 | 0.51 | 0.47 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 20 | 0.00 | 1.00 | 0.10 | 0.27 |
| PROPVC | Proportion of total length with visual clutter | 20 | 0.00 | 1.00 | 0.37 | 0.41 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.44 | 0.39 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.50 | 0.39 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 20 | 0.00 | 1.00 | 0.07 | 0.23 |
| PROPFRONTRD | Proportion of total length with a frontage road | 20 | 0.00 | 1.00 | 0.67 | 0.40 |
| DRWYDENS | Number of driveways per mile | 20 | 0.00 | 39.56 | 10.96 | 13.27 |
| UNSIGDENS | Number of unsignalized intersections per mile | 20 | 0.00 | 7.46 | 2.61 | 2.22 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 20 | 0.00 | 46.44 | 13.57 | 15.23 |
| SIGDENS | Number of signalized intersections per mile | 20 | 0.57 | 7.21 | 3.11 | 1.88 |
| MEDOPDENS | Number of median openings per mile | 17 | 0.00 | 6.31 | 0.99 | 1.52 |
| NODRWYS | Number of driveways | 20 | 0.00 | 91.00 | 25.15 | 30.36 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 20 | 0.00 | 89.00 | 9.85 | 20.73 |
| NORESFULLDRWY | Number of residential full-movement driveways | 20 | 0.00 | 6.00 | 1.00 | 1.97 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 20 | 0.00 | 62.00 | 12.55 | 20.92 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 20 | 0.00 | 15.00 | 1.75 | 4.14 |
| NOUNSIG | Number of unsignalized intersections | 20 | 0.00 | 24.00 | 7.05 | 6.59 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 20 | 0.00 | 21.00 | 4.65 | 5.15 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 20 | 0.00 | 12.00 | 2.35 | 3.31 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 20 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 20 | 0.00 | 14.00 | 2.25 | 3.18 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 20 | 0.00 | 11.00 | 2.45 | 3.43 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 20 | 0.00 | 11.00 | 2.40 | 3.45 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 20 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 20 | 0.00 | 13.00 | 2.35 | 3.39 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 20 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 20 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 20 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 20 | 0.00 | 13.00 | 3.00 | 3.67 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 20 | 0.00 | 14.00 | 3.70 | 4.78 |
| NOSIG | Number of signalized intersections | 20 | 2.00 | 16.00 | 7.10 | 3.70 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 20 | 141.00 | 3,612.00 | 1,275.00 | 1,030.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 20 | 143.00 | 27,595.00 | 4,535.00 | 5,702.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 20 | 0.00 | 3.00 | 0.65 | 0.93 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 20 | 2.00 | 13.00 | 6.45 | 3.28 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 20 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 20 | 1.00 | 11.00 | 4.75 | 2.65 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 20 | 2.00 | 11.00 | 6.25 | 2.77 |
| NOMEDOP | Number of median openings | 17 | 0.00 | 22.00 | 3.29 | 5.62 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 17 | 0.00 | 17.00 | 3.06 | 5.10 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 17 | 0.00 | 5.00 | 0.65 | 1.50 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 20 | 30.00 | 60.00 | 45.00 | 10.94 |
| AVGAADT | Average AADT | 20 | 14,295.00 | 52,858.00 | 30,402.00 | 12,016.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 9 | 142.00 | 1,554.00 | 808.00 | 499.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 9 | 142.00 | 1,554.00 | 749.00 | 454.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 9 | 93.00 | 3,500.00 | 1,053.00 | 1,011.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 81. Summary statistics for Northern California commercial land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 22 | 0.54 | 43.84 | 21.17 | 14.41 |
| Injury | Injury crashes/mile-year | 22 | 0.32 | 17.81 | 7.90 | 5.30 |
| Turning | Turning crashes/mile-year | 22 | 0.00 | 12.72 | 5.34 | 3.77 |
| Rear-end | Rear-end crashes/mile-year | 22 | 0.00 | 25.57 | 9.95 | 7.92 |
| Right-angle | Right-angle crashes/mile-year | 22 | 0.00 | 7.02 | 2.01 | 1.70 |
| PROPLANE1 | Proportion of total length with two lanes | 22 | 0.00 | 1.00 | 0.16 | 0.35 |
| PROPLANE2 | Proportion of total length with three or four lanes | 22 | 0.00 | 1.00 | 0.49 | 0.44 |
| PROPLANE3 | Proportion of total length with five or more lanes | 22 | 0.00 | 1.00 | 0.35 | 0.43 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 22 | 0.00 | 1.00 | 0.64 | 0.45 |
| PROPTWLTL | Proportion of total length with a TWLTL | 22 | 0.00 | 1.00 | 0.23 | 0.35 |
| PROPUNDIV | Proportion of total length with an undivided median | 22 | 0.00 | 1.00 | 0.14 | 0.28 |
| PROPNODEV | Proportion of total length with no adjacent development | 22 | 0.00 | 1.00 | 0.06 | 0.23 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 22 | 0.00 | 1.00 | 0.43 | 0.45 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 22 | 0.00 | 1.00 | 0.51 | 0.47 |
| PROPLIGHT | Proportion of total length with illumination present | 22 | 0.00 | 1.00 | 0.90 | 0.24 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 22 | 0.00 | 0.10 | 0.00 | 0.02 |
| PROPVC | Proportion of total length with visual clutter | 22 | 0.00 | 1.00 | 0.29 | 0.41 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.29 | 0.37 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.40 | 0.38 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.31 | 0.41 |
| PROPFRONTRD | Proportion of total length with a frontage road | 22 | 0.00 | 1.00 | 0.18 | 0.30 |
| DRWYDENS | Number of driveways per mile | 22 | 2.00 | 67.88 | 38.82 | 18.61 |
| UNSIGDENS | Number of unsignalized intersections per mile | 22 | 1.50 | 13.09 | 6.41 | 3.88 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 22 | 3.50 | 72.97 | 45.23 | 20.22 |
| SIGDENS | Number of signalized intersections per mile | 22 | 0.00 | 8.06 | 4.17 | 1.96 |
| MEDOPDENS | Number of median openings per mile | 21 | 0.00 | 6.08 | 1.88 | 1.85 |
| NODRWYS | Number of driveways | 22 | 4.00 | 627.00 | 137.14 | 177.62 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 22 | 0.00 | 415.00 | 43.05 | 89.66 |
| NORESFULLDRWY | Number of residential full-movement driveways | 22 | 0.00 | 49.00 | 2.68 | 10.40 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 22 | 0.00 | 477.00 | 87.73 | 125.51 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 22 | 0.00 | 22.00 | 3.68 | 6.31 |
| NOUNSIG | Number of unsignalized intersections | 22 | 2.00 | 137.00 | 22.45 | 33.50 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 22 | 2.00 | 92.00 | 18.36 | 25.27 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 22 | 0.00 | 45.00 | 4.09 | 9.70 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 22 | 0.00 | 68.00 | 9.68 | 15.93 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 22 | 0.00 | 36.00 | 9.14 | 12.38 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 22 | 0.00 | 36.00 | 8.68 | 11.75 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 22 | 0.00 | 3.00 | 0.45 | 0.91 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 22 | 0.00 | 45.00 | 4.00 | 9.72 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 22 | 0.00 | 2.00 | 0.09 | 0.43 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 22 | 0.00 | 1.00 | 0.05 | 0.21 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 22 | 0.00 | 1.00 | 0.05 | 0.21 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 22 | 0.00 | 5.00 | 0.50 | 1.34 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 22 | 0.00 | 89.00 | 11.59 | 19.92 |
| NOSIG | Number of signalized intersections | 22 | 0.00 | 54.00 | 12.95 | 14.86 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 19 | 114.00 | 3,408.00 | 650.00 | 721.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 19 | 735.00 | 5,745.00 | 2,133.00 | 1,199.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 22 | 0.00 | 14.00 | 3.27 | 3.95 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 22 | 0.00 | 41.00 | 9.50 | 11.45 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 22 | 0.00 | 5.00 | 0.36 | 1.14 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 22 | 0.00 | 9.00 | 2.91 | 2.51 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 22 | 0.00 | 42.00 | 12.09 | 13.31 |
| NOMEDOP | Number of median openings | 21 | 0.00 | 42.00 | 7.29 | 11.38 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 21 | 0.00 | 34.00 | 6.24 | 9.88 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 21 | 0.00 | 8.00 | 1.10 | 2.47 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 22 | 30.00 | 50.00 | 38.00 | 5.29 |
| AVGAADT | Average AADT | 22 | 6,233.00 | 46,014.00 | 27,364.00 | 10,725.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 4 | 200.00 | 1,483.00 | 783.00 | 590.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 4 | 21.00 | 1,048.00 | 311.00 | 494.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 4 | 32.00 | 215.00 | 101.00 | 79.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 82. Summary statistics for Southern California commercial land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 22 | 1.64 | 108.99 | 26.65 | 22.41 |
| Injury | Injury crashes/mile-year | 22 | 0.33 | 35.88 | 8.26 | 7.65 |
| Turning | Turning crashes/mile-year | 22 | 0.33 | 35.88 | 8.26 | 7.65 |
| Rear-end | Rear-end crashes/mile-year | 22 | 0.33 | 43.60 | 11.13 | 9.80 |
| Right-angle | Right-angle crashes/mile-year | 22 | 0.00 | 14.99 | 2.72 | 3.08 |
| PROPLANE1 | Proportion of total length with two lanes | 22 | 0.00 | 0.47 | 0.02 | 0.10 |
| PROPLANE2 | Proportion of total length with three or four lanes | 22 | 0.00 | 1.00 | 0.56 | 0.45 |
| PROPLANE3 | Proportion of total length with five or more lanes | 22 | 0.00 | 1.00 | 0.42 | 0.46 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 22 | 0.00 | 1.00 | 0.44 | 0.44 |
| PROPTWLTL | Proportion of total length with a TWLTL | 22 | 0.00 | 1.00 | 0.41 | 0.42 |
| PROPUNDIV | Proportion of total length with an undivided median | 22 | 0.00 | 1.00 | 0.15 | 0.30 |
| PROPNODEV | Proportion of total length with no adjacent development | 22 | 0.00 | 1.00 | 0.13 | 0.30 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 22 | 0.00 | 1.00 | 0.55 | 0.44 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 22 | 0.00 | 1.00 | 0.33 | 0.41 |
| PROPLIGHT | Proportion of total length with illumination present | 22 | 0.00 | 1.00 | 0.78 | 0.39 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPVC | Proportion of total length with visual clutter | 22 | 0.00 | 1.00 | 0.30 | 0.39 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.41 | 0.37 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.50 | 0.36 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 22 | 0.00 | 1.00 | 0.09 | 0.23 |
| PROPFRONTRD | Proportion of total length with a frontage road | 22 | 0.00 | 1.00 | 0.36 | 0.41 |
| DRWYDENS | Number of driveways per mile | 22 | 0.00 | 63.69 | 26.81 | 19.51 |
| UNSIGDENS | Number of unsignalized intersections per mile | 22 | 0.00 | 16.07 | 5.69 | 3.70 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 22 | 1.97 | 79.76 | 32.50 | 22.07 |
| SIGDENS | Number of signalized intersections per mile | 22 | 0.00 | 5.45 | 3.31 | 1.30 |
| MEDOPDENS | Number of median openings per mile | 15 | 0.00 | 12.01 | 2.06 | 3.10 |
| NODRWYS | Number of driveways | 22 | 0.00 | 279.00 | 73.50 | 79.34 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 22 | 0.00 | 216.00 | 38.23 | 60.13 |
| NORESFULLDRWY | Number of residential full-movement driveways | 22 | 0.00 | 58.00 | 5.73 | 15.04 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 22 | 0.00 | 152.00 | 29.45 | 46.53 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 22 | 0.00 | 2.00 | 0.09 | 0.43 |
| NOUNSIG | Number of unsignalized intersections | 22 | 0.00 | 58.00 | 15.55 | 17.68 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 22 | 0.00 | 53.00 | 12.00 | 14.82 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 22 | 0.00 | 21.00 | 3.55 | 5.23 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 22 | 0.00 | 35.00 | 6.14 | 9.75 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 22 | 0.00 | 37.00 | 5.41 | 9.96 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 22 | 0.00 | 29.00 | 4.73 | 8.40 |
| NO3LEGLFMOUNSIG | Number of 3-legged left from major only unsignalized intersections | 22 | 0.00 | 6.00 | 0.59 | 1.50 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 22 | 0.00 | 21.00 | 3.55 | 5.23 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 22 | 0.00 | 8.00 | 0.73 | 2.07 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 22 | 0.00 | 40.00 | 8.64 | 11.20 |
| NOSIG | Number of signalized intersections | 22 | 0.00 | 38.00 | 8.95 | 9.72 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 21 | 344.00 | 2,882.00 | 1,175.00 | 833.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 21 | 583.00 | 7,520.00 | 2,806.00 | 1,554.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 22 | 0.00 | 6.00 | 0.91 | 1.44 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 22 | 0.00 | 35.00 | 8.05 | 9.13 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 22 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 22 | 0.00 | 16.00 | 2.73 | 4.24 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 22 | 0.00 | 37.00 | 8.68 | 9.57 |
| NOMEDOP | Number of median openings | 15 | 0.00 | 31.00 | 6.20 | 8.68 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 15 | 0.00 | 25.00 | 5.13 | 7.44 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 15 | 0.00 | 6.00 | 1.07 | 1.94 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 22 | 35.00 | 50.00 | 42.00 | 4.51 |
| AVGAADT | Average AADT | 22 | 11,538.00 | 66,002.00 | 34,380.00 | 14,088.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 3 | 129.00 | 550.00 | 348.00 | 211.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 3 | 20.00 | 134.00 | 83.00 | 58.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 2 | 33.00 | 109.00 | 71.00 | 54.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 83. Summary statistics for North Carolina residential land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 24 | 5.22 | 39.65 | 18.04 | 10.01 |
| Injury | Injury crashes/mile-year | 24 | 1.12 | 11.58 | 4.91 | 2.51 |
| Turning | Turning crashes/mile-year | 24 | 0.00 | 18.27 | 3.31 | 3.57 |
| Rear-end | Rear-end crashes/mile-year | 24 | 0.97 | 18.97 | 8.21 | 5.63 |
| Right-angle | Right-angle crashes/mile-year | 24 | 0.00 | 7.30 | 2.75 | 2.05 |
| PROPLANE1 | Proportion of total length with two lanes | 24 | 0.00 | 1.00 | 0.11 | 0.30 |
| PROPLANE2 | Proportion of total length with three or four lanes | 24 | 0.00 | 1.00 | 0.89 | 0.30 |
| PROPLANE3 | Proportion of total length with five or more lanes | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 24 | 0.00 | 1.00 | 0.32 | 0.43 |
| PROPTWLTL | Proportion of total length with a TWLTL | 24 | 0.00 | 1.00 | 0.36 | 0.42 |
| PROPUNDIV | Proportion of total length with an undivided median | 24 | 0.00 | 1.00 | 0.30 | 0.43 |
| PROPNODEV | Proportion of total length with no adjacent development | 24 | 0.00 | 1.00 | 0.09 | 0.28 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 24 | 0.00 | 1.00 | 0.91 | 0.28 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPLIGHT | Proportion of total length with illumination present | 24 | 0.00 | 1.00 | 0.79 | 0.41 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 24 | 0.00 | 1.00 | 0.08 | 0.24 |
| PROPVC | Proportion of total length with visual clutter | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 24 | 0.00 | 1.00 | 0.36 | 0.40 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 24 | 0.00 | 1.00 | 0.19 | 0.31 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 24 | 0.00 | 1.00 | 0.46 | 0.45 |
| PROPFRONTRD | Proportion of total length with a frontage road | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| DRWYDENS | Number of driveways per mile | 24 | 0.00 | 53.55 | 17.59 | 16.82 |
| UNSIGDENS | Number of unsignalized intersections per mile | 24 | 0.73 | 12.05 | 6.94 | 2.42 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 24 | 1.46 | 65.60 | 24.53 | 18.13 |
| SIGDENS | Number of signalized intersections per mile | 24 | 0.51 | 3.75 | 1.67 | 0.83 |
| MEDOPDENS | Number of median openings per mile | 15 | 0.00 | 5.24 | 1.02 | 1.59 |
| NODRWYS | Number of driveways | 24 | 0.00 | 70.00 | 25.17 | 21.10 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 24 | 0.00 | 20.00 | 3.38 | 4.80 |
| NORESFULLDRWY | Number of residential full-movement driveways | 24 | 0.00 | 60.00 | 18.25 | 19.69 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 24 | 0.00 | 18.00 | 1.88 | 4.19 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 24 | 0.00 | 18.00 | 1.67 | 3.85 |
| NOUNSIG | Number of unsignalized intersections | 24 | 2.00 | 30.00 | 11.79 | 7.45 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 24 | 2.00 | 39.00 | 10.08 | 8.48 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 24 | 0.00 | 8.00 | 2.79 | 2.11 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 24 | 1.00 | 23.00 | 7.29 | 5.52 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 24 | 0.00 | 11.00 | 1.71 | 2.54 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 24 | 0.00 | 11.00 | 1.67 | 2.57 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 24 | 0.00 | 1.00 | 0.04 | 0.20 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 24 | 0.00 | 8.00 | 2.63 | 2.10 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 24 | 0.00 | 1.00 | 0.17 | 0.38 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 24 | 0.00 | 1.00 | 0.17 | 0.38 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 24 | 0.00 | 7.00 | 1.42 | 1.77 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 24 | 0.00 | 30.00 | 7.67 | 7.51 |
| NOSIG | Number of signalized intersections | 24 | 1.00 | 8.00 | 2.83 | 1.99 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 18 | 646.00 | 6,506.00 | 2,446.00 | 1,538.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 18 | 1,628.00 | 11,378.00 | 4,462.00 | 2,287.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 24 | 0.00 | 2.00 | 0.58 | 0.72 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 24 | 0.00 | 6.00 | 2.29 | 1.76 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 24 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 24 | 0.00 | 8.00 | 1.67 | 1.71 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 24 | 1.00 | 8.00 | 2.71 | 1.99 |
| NOMEDOP | Number of median openings | 15 | 0.00 | 7.00 | 1.40 | 2.13 |
| MEDOPLT | Number of median openings with a left-turn lane | 15 | 0.00 | 6.00 | 1.33 | 1.95 |
| MEDOPNOLT | Number of median openings without a left-turn lane | 15 | 0.00 | 1.00 | 0.07 | 0.26 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 24 | 35.00 | 55.00 | 44.00 | 5.10 |
| AVGAADT | Average AADT | 24 | 90.00 | 31,353.00 | 14,695.00 | 7,128.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 84. Summary statistics for Minnesota residential land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 21 | 3.10 | 79.08 | 23.35 | 21.46 |
| Injury | Injury crashes/mile-year | 21 | 1.19 | 26.43 | 7.72 | 7.95 |
| Turning | Turning crashes/mile-year | 21 | 0.00 | 5.79 | 1.52 | 1.76 |
| Rear-end | Rear-end crashes/mile-year | 21 | 0.33 | 48.49 | 10.95 | 13.30 |
| Right-angle | Right-angle crashes/mile-year | 21 | 0.36 | 24.59 | 4.04 | 5.44 |
| PROPLANE1 | Proportion of total length with two lanes | 21 | 0.00 | 1.00 | 0.56 | 0.50 |
| PROPLANE2 | Proportion of total length with three or four lanes | 21 | 0.00 | 1.00 | 0.39 | 0.49 |
| PROPLANE3 | Proportion of total length with five or more lanes | 21 | 0.00 | 1.00 | 0.05 | 0.22 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 21 | 0.00 | 1.00 | 0.34 | 0.44 |
| PROPTWLTL | Proportion of total length with a TWLTL | 21 | 0.00 | 0.29 | 0.02 | 0.06 |
| PROPUNDIV | Proportion of total length with an undivided median | 21 | 0.00 | 1.00 | 0.64 | 0.43 |
| PROPNODEV | Proportion of total length with no adjacent development | 21 | 0.00 | 0.40 | 0.05 | 0.12 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 21 | 0.00 | 1.00 | 0.81 | 0.34 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 21 | 0.00 | 1.00 | 0.14 | 0.34 |
| PROPLIGHT | Proportion of total length with illumination present | 21 | 0.00 | 1.00 | 0.37 | 0.44 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 21 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPVC | Proportion of total length with visual clutter | 21 | 0.00 | 0.34 | 0.02 | 0.07 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 21 | 0.00 | 1.00 | 0.93 | 0.23 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 21 | 0.00 | 0.33 | 0.03 | 0.08 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 21 | 0.00 | 1.00 | 0.05 | 0.22 |
| PROPFRONTRD | Proportion of total length with a frontage road | 21 | 0.00 | 1.00 | 0.44 | 0.46 |
| DRWYDENS | Number of driveways per mile | 21 | 0.00 | 73.86 | 20.93 | 20.91 |
| UNSIGDENS | Number of unsignalized intersections per mile | 21 | 0.00 | 15.24 | 5.90 | 3.83 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 21 | 0.00 | 79.72 | 26.82 | 23.26 |
| SIGDENS | Number of signalized intersections per mile | 21 | 0.21 | 5.49 | 1.93 | 1.32 |
| MEDOPDENS | Number of median openings per mile | 16 | 0.00 | 3.25 | 0.52 | 0.98 |
| NODRWYS | Number of driveways | 21 | 0.00 | 221.00 | 51.52 | 59.93 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 21 | 0.00 | 54.00 | 10.19 | 13.74 |
| NORESFULLDRWY | Number of residential full-movement driveways | 21 | 0.00 | 160.00 | 39.86 | 46.37 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 21 | 0.00 | 8.00 | 1.00 | 2.30 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 21 | 0.00 | 5.00 | 0.48 | 1.29 |
| NOUNSIG | Number of unsignalized intersections | 21 | 0.00 | 51.00 | 15.43 | 15.95 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 21 | 0.00 | 38.00 | 9.33 | 11.94 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 21 | 0.00 | 19.00 | 6.05 | 6.25 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 21 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 21 | 0.00 | 38.00 | 8.57 | 11.82 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 21 | 0.00 | 5.00 | 0.76 | 1.41 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 21 | 0.00 | 5.00 | 0.71 | 1.42 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 21 | 0.00 | 1.00 | 0.05 | 0.22 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 21 | 0.00 | 19.00 | 6.05 | 6.25 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 21 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 21 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 21 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 21 | 0.00 | 19.00 | 3.57 | 5.46 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 21 | 0.00 | 18.00 | 2.43 | 4.07 |
| NOSIG | Number of signalized intersections | 21 | 1.00 | 19.00 | 3.86 | 4.07 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 16 | 301.00 | 6,538.00 | 1,896.00 | 1,606.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 16 | 504.00 | 13,545.00 | 3,767.00 | 3,142.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 21 | 0.00 | 4.00 | 0.43 | 0.98 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 21 | 1.00 | 15.00 | 3.43 | 3.41 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 21 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 21 | 0.00 | 11.00 | 2.29 | 2.41 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 21 | 1.00 | 17.00 | 2.95 | 3.57 |
| NOMEDOP | Number of median openings | 16 | 0.00 | 3.00 | 0.75 | 1.13 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 16 | 0.00 | 3.00 | 0.69 | 1.01 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 16 | 0.00 | 1.00 | 0.06 | 0.25 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 21 | 30.00 | 55.00 | 41.00 | 8.54 |
| AVGAADT | Average AADT | 21 | 5,423.00 | 70,333.00 | 18,397.00 | 16,092.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 7 | 321.00 | 762.00 | 487.00 | 170.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 7 | 321.00 | 762.00 | 460.00 | 179.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 8 | 94.00 | 762.00 | 367.00 | 205.00 |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane. | ||||||
Table 85. Summary statistics for Northern California residential land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 17 | 0.19 | 36.77 | 15.75 | 10.49 |
| Injury | Injury crashes/mile-year | 17 | 0.00 | 20.83 | 6.75 | 5.91 |
| Turning | Turning crashes/mile-year | 17 | 0.00 | 17.18 | 4.81 | 4.10 |
| Rear-end | Rear-end crashes/mile-year | 17 | 0.00 | 15.69 | 6.56 | 4.92 |
| Right-angle | Right-angle crashes/mile-year | 17 | 0.00 | 6.67 | 1.79 | 1.97 |
| PROPLANE1 | Proportion of total length with two lanes | 17 | 0.00 | 1.00 | 0.35 | 0.43 |
| PROPLANE2 | Proportion of total length with three or four lanes | 17 | 0.00 | 1.00 | 0.46 | 0.45 |
| PROPLANE3 | Proportion of total length with five or more lanes | 17 | 0.00 | 1.00 | 0.18 | 0.39 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 17 | 0.00 | 1.00 | 0.49 | 0.47 |
| PROPTWLTL | Proportion of total length with a TWLTL | 17 | 0.00 | 0.97 | 0.11 | 0.26 |
| PROPUNDIV | Proportion of total length with an undivided median | 17 | 0.00 | 1.00 | 0.40 | 0.43 |
| PROPNODEV | Proportion of total length with no adjacent development | 17 | 0.00 | 0.33 | 0.06 | 0.13 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 17 | 0.00 | 1.00 | 0.75 | 0.37 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 17 | 0.00 | 1.00 | 0.19 | 0.36 |
| PROPLIGHT | Proportion of total length with illumination present | 17 | 0.00 | 1.00 | 0.46 | 0.47 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 17 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPVC | Proportion of total length with visual clutter | 17 | 0.00 | 1.00 | 0.09 | 0.26 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 17 | 0.00 | 1.00 | 0.54 | 0.47 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 17 | 0.00 | 1.00 | 0.25 | 0.43 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 17 | 0.00 | 1.00 | 0.21 | 0.39 |
| PROPFRONTRD | Proportion of total length with a frontage road | 17 | 0.00 | 1.00 | 0.51 | 0.46 |
| DRWYDENS | Number of driveways per mile | 17 | 0.00 | 135.52 | 25.45 | 35.88 |
| UNSIGDENS | Number of unsignalized intersections per mile | 17 | 0.00 | 18.71 | 5.79 | 4.76 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 17 | 0.00 | 144.14 | 31.24 | 38.57 |
| SIGDENS | Number of signalized intersections per mile | 17 | 0.00 | 9.09 | 2.46 | 2.20 |
| MEDOPDENS | Number of median openings per mile | 16 | 0.00 | 12.30 | 1.65 | 3.13 |
| NODRWYS | Number of driveways | 17 | 0.00 | 393.00 | 65.00 | 98.03 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 17 | 0.00 | 35.00 | 5.35 | 9.10 |
| NORESFULLDRWY | Number of residential full-movement driveways | 17 | 0.00 | 358.00 | 40.12 | 90.09 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 17 | 0.00 | 59.00 | 8.88 | 15.71 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 17 | 0.00 | 83.00 | 10.65 | 22.23 |
| NOUNSIG | Number of unsignalized intersections | 17 | 0.00 | 42.00 | 14.24 | 12.64 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 17 | 0.00 | 36.00 | 11.29 | 10.68 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 17 | 0.00 | 14.00 | 2.88 | 3.77 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 17 | 0.00 | 1.00 | 0.06 | 0.24 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 17 | 0.00 | 27.00 | 8.24 | 8.04 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 17 | 0.00 | 27.00 | 3.06 | 6.67 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 17 | 0.00 | 25.00 | 2.82 | 6.25 |
| NO3LEGLFMOUNSIG | Number of 3-legged unsignalized intersections with no left-turn movement from crossroad | 17 | 0.00 | 2.00 | 0.18 | 0.53 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 17 | 0.00 | 14.00 | 2.88 | 3.77 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 17 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 17 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged unsignalized intersections with no left-turn movement from crossroad | 17 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 17 | 0.00 | 4.00 | 0.94 | 1.09 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 17 | 0.00 | 25.00 | 7.65 | 7.42 |
| NOSIG | Number of signalized intersections | 17 | 0.00 | 24.00 | 5.88 | 5.86 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 14 | 109.00 | 4,471.00 | 1,677.00 | 1,658.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 14 | 702.00 | 7,265.00 | 3,960.00 | 1,829.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 17 | 0.00 | 6.00 | 1.35 | 2.03 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 17 | 0.00 | 20.00 | 4.47 | 4.81 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 17 | 0.00 | 1.00 | 0.06 | 0.24 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 17 | 0.00 | 8.00 | 2.53 | 2.55 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 17 | 0.00 | 23.00 | 4.06 | 5.61 |
| NOMEDOP | Number of median openings | 16 | 0.00 | 19.00 | 3.31 | 5.20 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 16 | 0.00 | 19.00 | 2.94 | 4.89 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 16 | 0.00 | 4.00 | 0.38 | 1.02 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 17 | 25.00 | 55.00 | 42.00 | 9.34 |
| AVGAADT | Average AADT | 17 | 10,300.00 | 69,847.00 | 26,490.00 | 13,97.002 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 3 | 183.00 | 662.00 | 364.00 | 260.00 |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 3 | 49.00 | 662.00 | 319.00 | 313.00 |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 1 | 383.00 | 383.00 | 383.00 | — |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane; —Not applicable. | ||||||
Table 86. Summary statistics for Southern California residential land use.
| Variable Name | Variable Description | Corridors | Minimum | Maximum | Mean | St. Dev. |
|---|---|---|---|---|---|---|
| Total | Total crashes/mile-year | 13 | 4.15 | 51.13 | 19.39 | 14.47 |
| Injury | Injury crashes/mile-year | 13 | 1.57 | 21.51 | 8.05 | 5.64 |
| Turning | Turning crashes/mile-year | 13 | 1.04 | 10.77 | 5.30 | 3.13 |
| Rear-end | Rear-end crashes/mile-year | 13 | 2.07 | 35.50 | 9.34 | 9.55 |
| Right-angle | Right-angle crashes/mile-year | 13 | 0.00 | 4.04 | 1.51 | 1.21 |
| PROPLANE1 | Proportion of total length with two lanes | 13 | 0.00 | 1.00 | 0.18 | 0.37 |
| PROPLANE2 | Proportion of total length with three or four lanes | 13 | 0.00 | 1.00 | 0.66 | 0.47 |
| PROPLANE3 | Proportion of total length with five or more lanes | 13 | 0.00 | 1.00 | 0.16 | 0.37 |
| PROPDIV | Proportion of total length with curb or raised concrete median | 13 | 0.00 | 1.00 | 0.31 | 0.44 |
| PROPTWLTL | Proportion of total length with a TWLTL | 13 | 0.00 | 1.00 | 0.42 | 0.43 |
| PROPUNDIV | Proportion of total length with an undivided median | 13 | 0.00 | 1.00 | 0.27 | 0.36 |
| PROPNODEV | Proportion of total length with no adjacent development | 13 | 0.00 | 0.58 | 0.05 | 0.16 |
| PROPPARTDEV | Proportion of total length with partial adjacent development | 13 | 0.00 | 1.00 | 0.69 | 0.41 |
| PROPFULLDEV | Proportion of total length with full adjacent development | 13 | 0.00 | 1.00 | 0.25 | 0.40 |
| PROPLIGHT | Proportion of total length with illumination present | 13 | 0.00 | 1.00 | 0.62 | 0.45 |
| PROPPOORPVMNT | Proportion of total length with a poor pavement condition | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPVC | Proportion of total length with visual clutter | 13 | 0.00 | 1.00 | 0.21 | 0.38 |
| PROPLIMCONN | Proportion of total length with limited connectivity on adjacent developments | 13 | 0.00 | 1.00 | 0.81 | 0.31 |
| PROPMODCONN | Proportion of total length with moderate connectivity on adjacent developments | 13 | 0.00 | 1.00 | 0.19 | 0.31 |
| PROPSIGCONN | Proportion of total length with significant connectivity on adjacent developments | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| PROPFRONTRD | Proportion of total length with a frontage road | 13 | 0.00 | 1.00 | 0.55 | 0.46 |
| DRWYDENS | Number of driveways per mile | 13 | 0.00 | 85.71 | 19.62 | 21.98 |
| UNSIGDENS | Number of unsignalized intersections per mile | 13 | 0.61 | 14.29 | 6.76 | 4.42 |
| ACCDENS | Number of driveways plus unsignalized intersections per mile | 13 | 0.61 | 100.00 | 26.38 | 25.42 |
| SIGDENS | Number of signalized intersections per mile | 13 | 0.00 | 2.56 | 1.86 | 0.80 |
| MEDOPDENS | Number of median openings per mile | 5 | 0.00 | 3.17 | 1.44 | 1.24 |
| NODRWYS | Number of driveways | 13 | 0.00 | 123.00 | 31.46 | 33.76 |
| NOCOMFULLDRWY | Number of commercial full-movement driveways | 13 | 0.00 | 88.00 | 15.54 | 25.51 |
| NORESFULLDRWY | Number of residential full-movement driveways | 13 | 0.00 | 32.00 | 10.77 | 12.09 |
| NOCOMLIMDRWY | Number of commercial limited-movement driveways | 13 | 0.00 | 12.00 | 3.00 | 4.40 |
| NORESLIMDRWY | Number of residential limited-movement driveways | 13 | 0.00 | 26.00 | 2.15 | 7.17 |
| NOUNSIG | Number of unsignalized intersections | 13 | 1.00 | 34.00 | 11.92 | 10.05 |
| NO3LEGUNSIG | Number of 3-legged unsignalized intersections | 13 | 1.00 | 33.00 | 9.54 | 8.94 |
| NO4LEGUNSIG | Number of 4-legged unsignalized intersections | 13 | 0.00 | 9.00 | 2.31 | 2.53 |
| NO5LEGUNSIG | Number of 5-legged unsignalized intersections | 13 | 0.00 | 1.00 | 0.08 | 0.28 |
| NO3LEGFULLUNSIG | Number of 3-legged full-movement unsignalized intersections | 13 | 0.00 | 27.00 | 8.23 | 8.08 |
| NO3LEGLIMUNSIG | Number of 3-legged limited-movement unsignalized intersections | 13 | 0.00 | 6.00 | 1.31 | 2.29 |
| NO3LEGRIROUNSIG | Number of 3-legged right-in/right-out unsignalized intersections | 13 | 0.00 | 6.00 | 1.31 | 2.29 |
| NO3LEGLFMOUNSIG | Number of 3-legged left from major only unsignalized intersections | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGFULLUNSIG | Number of 4-legged full-movement unsignalized intersections | 13 | 0.00 | 9.00 | 2.31 | 2.53 |
| NO4LEGLIMUNSIG | Number of 4-legged limited-movement unsignalized intersections | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGRIROUNSIG | Number of 4-legged right-in/right-out unsignalized intersections | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| NO4LEGLFMOUNSIG | Number of 4-legged left from major only unsignalized intersections | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLUNSIG | Number of unsignalized intersections with a right-turn lane | 13 | 0.00 | 3.00 | 0.31 | 0.85 |
| NOLTLUNSIG | Number of unsignalized intersections with a left-turn lane | 13 | 1.00 | 25.00 | 8.62 | 8.04 |
| NOSIG | Number of signalized intersections | 13 | 0.00 | 7.00 | 3.31 | 1.93 |
| MINSPCSIG | Minimum spacing of signalized intersections (feet) | 11 | 258.00 | 5,541.00 | 1,839.00 | 1,500.00 |
| MAXSPCSIG | Maximum spacing of signalized intersections (feet) | 11 | 817.00 | 17,546.00 | 4,241.00 | 4,580.00 |
| NO3LEGSIG | Number of 3-legged signalized intersections | 13 | 0.00 | 2.00 | 0.85 | 0.90 |
| NO4LEGSIG | Number of 4-legged signalized intersections | 13 | 0.00 | 5.00 | 2.46 | 1.71 |
| NO5LEGSIG | Number of 5-legged signalized intersections | 13 | 0.00 | 0.00 | 0.00 | 0.00 |
| NORTLSIG | Number of signalized intersections with a right-turn lane on the mainline | 13 | 0.00 | 5.00 | 1.62 | 1.56 |
| NOLTLSIG | Number of signalized intersections with a left-turn lane on the mainline | 13 | 0.00 | 7.00 | 3.08 | 1.98 |
| NOMEDOP | Number of median openings | 5 | 0.00 | 3.00 | 1.60 | 1.14 |
| NOMEDOPLT | Number of median openings with a left-turn lane | 5 | 0.00 | 2.00 | 1.40 | 0.89 |
| NOMEDOPNOLT | Number of median openings without a left-turn lane | 5 | 0.00 | 1.00 | 0.20 | 0.45 |
| SPEED_LIMIT | Posted speed limit (miles per hour) | 13 | 40.00 | 55 | 47 | 5.55 |
| AVGAADT | Average AADT | 13 | 15,358.00 | 76,837.00 | 32,706.00 | 18,835.00 |
| SPCOFFLT | Minimum spacing from off-ramp to available left turn onto mainline from same side of road (feet) | 0 | — | — | — | — |
| SPCOFFRT | Minimum spacing from off-ramp to available right turn onto mainline from same side of road (feet) | 0 | — | — | — | — |
| SPCON | Minimum spacing from on-ramp to available right turn onto mainline from same side of road (feet) | 0 | — | — | — | — |
| St. Dev. = standard deviation; TWLTL = two-way left-turn lane; —Not applicable. | ||||||
